In Learn More the National Geographic magazine team shares some of its best sources and other information to expand your knowledge of our featured subjects. Special thanks to the Research Division.

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Death Valley National Parkwww.nps.gov/devaPlan a visit to the peaks, canyons, and valleys of the Mojave Desert. Explore salt pans in the lowest place in North America, singing sand dunes 700 feet high, and rare desert springs.